public Employee SaveEmployee(Employee e)
 {
     SalesERPDAL salesDal = new SalesERPDAL();
     salesDal.Employees.Add(e);
     salesDal.SaveChanges();
     return e;
 }
 public void UploadEmployees(List<Employee> employees)
 {
     SalesERPDAL salesDal = new SalesERPDAL();
     salesDal.Employees.AddRange(employees);
     salesDal.SaveChanges();
 }